Refrigerator



W. K. KNUTSON.

REFRIGERATOR.

APPLlcAnoN FILED SEPTL 7, 1920.

l A l 2,68% Patented Apr. M, 1922.

entre@ stares PATENT @FFHGO TLLIAM K. KNUTSON, F *WICHITA FALLS, TEXAS,ASSIGNOR T0 KNUTSON VACUUM REFRIGERATUR COMPANY, OF WICHITA FALLS,TEXAS, A COMMON LAW TRUST.

REFRIGERATOR.

imacat.

Specification of Letters Patent.

)Patenten apr. M, ieee.

T o all whom t may concern.'

Be it known that I, YVILLIAM K. lNif'rsoN, a citizen of the UnitedStates, residing at Wichita Falls, in vthe county of Wichita,

State of Texas have invented certain new and useful Improvements inRefrigerators; and l do hereby declare the following to be a full,clear, and exact description of the invention, such as will enableothers skilled in the art to which it appertains to make and use thesame. This invention is a refrigerator, and the broad object thereof isto construct the same with its Walls and doors of wood packed withcomminuted material, separated by a vacuum chamber or jacket from aninner shell which surrounds the food space, the shell by preferencebeing of reinforced concrete, whereby the food will never becontaminated by the outer wall nor the outer wall ever receive dampnessfrom the inner Shell or its contents.

rThis object is carried out successfully by the construction hereinafterdescribed, and

shown in the drawings wherein:

Figure 1 is a horizontal section through the ref rigerator.

Figure 2 is a vertical longitudinal sectional view on the line 2-2 ofFigure 1'.

Figure 3 is a vertical transverse sectional View on the line 3-3 ofFigure 1.

rlhis refrigerator is an ordinary ice boX whereof B designates the backor rear wall, E the end walls, D the. doors, and S the space forcontaining food and ice. lt is desirable that the exterior of the wallsof the usual refrigerator be of wood or like material, or at least thatwood shall appear on the exterior. Accordingly the numerals 10 and 11-designate the rear and end panels of wood, and 12 are L-shaped cornerposts.

Within the door and within each wall panel is disposed a packing 21 ofcomminuted material such as charcoal, sawdust, or the like, in the formof slabs or plates and this material is held in place against the walls10 and 11 in any desired manner. Spaced inwardly from said plates 21 isinner met-al shell 25.

To hold the metal shell 25 in proper spaced position within thecomposition walls 21, vangle plates 41 are employed. Spaced inwardly ofthe inner shell 25 are the shells of reinforced concrete 29, the innerface of each of which may be coated with some moisture-proof material.Spacers 3() hold the concrete shells and plates 25 apart to provide acold air space 31, while spacers 26 hold the concrete shells in spacedrelation to the metal shell 25.

The inner concrete shell is divided into four separate chambers LF', F2,and F3, the former containing ice, and the other three being adapted tocontain food. 1n the lower portion of the ice chamber I there is mounteda metal ice shelf 32l having perforations for the passage of thedrippings of the ice. ln the bottom of the chamberl is located a drippan 33, which receives the vdrippings which pass through the ice shelf32. In one side of the ice chamber Lat a point between the pan 33 andthe shelf 32, 'there is formed a cold air outlet'34. It will be notedthat there is a cold air space 35 extending vertically between the iceJchamber l and food chamber F3, on the one side, `and the two foodchambers F and F2@ o-n the other side. Between the bottom of the chamberF and the top of the chamber F2, is a horizontal cold air passage 36,and a similar passage 37 between the Abottom of the water pan-33 and thetop of the food chamber F3 therebeneath. These horizontal air passagescommunicate with the vertical spaces 31 outside of the said chambers.The inner end of the passage 36 is disposed opposite the said opening34, so that the cold air which passes out of said opening will bedivided, a part of the same passing upwardly between the chambers T andF, and the other downwardly between the chambers F2 and F3, and thencearound the bottoms of 'the latter .chambers and upwardly and outwardlyof the other chambers where it reenters the ice chamber l through anopening 39 in the top thereof. A pipe 40 leads from the drip pan to theexterior of the refrigerator, where it is provided with a faucet fordraining the water 'from the pan, or for drinking purposes. Normally thewater remains in the pan and helps to cool the contents of therefrigerator.

Suitable spacers 41, disposed between the different chambers, hold thechambers in proper spaced relation so that the air pas sages are clearfor the passage of the cold air from the ice chamber.

What -is claimed is:

A refrigerator including an outer wooden shell, a composition shellsecured to the lil@ Wooden shell and arranged therewithin, a metal shellheld in spaced relation to and within the composition shell, compositioncompartments spaced Within the metal shell and fromeach other to providecold air passages therearound and therebetween, one of the compartmentsproviding an ice chamber communicating with the said cold air passages,the lower portion of the ice chamber 10 being formed to provide a drippan and Lambs? communicating with said passages, 'spacers between theshells, the ice chamber having an air receiving opening in its upperWall.

In testimony whereof, I aix my signature in the presence of twowitnesses.

WILLIAM K. KN UTSON.

